Re: Proposal: prefetch tarballs in a batch

[Ludovic Courtès]

address@hidden (Ludovic Courtès) skribis:

>> Test end:
>>   result-kind: fail
>>   actual-value: #f
>>   actual-error: (srfi-34 #<condition &nix-protocol-error [message: "closing 
>> file descriptor 1599602736: Bad file descriptor" status: 1] 8a62798>)
>
> That one occurs many times.  I suspect this has to do with the daemon
> features enabled by c0412fedf, though I don’t see which one.

(4 months later...)

I reproduced this EBADF thing with a 2.6.35 kernel on x86_64, and the
culprit turned out to be vfork: commenting out uses of vfork in the
daemon solved the problem.

That sort of ringed a bell, and indeed, Nix commit f794465c (Nov. 2012!)
disabled vfork for similar reasons.

So guix-daemon no longer uses vfork.

Ludo’.